Review

Question 1

What’s an integer?

Answer 1

A complete number (EX. 5)

Question 2

What’s a float?

Answer 2

An un-complete number (EX. 5.5)

Question 3

What’s a string?

Answer 3

Sequence of characters

Question 4

Are strings mutable or immutable?

Answer 4

Immutable

Question 5

Booleans: What does “and” do?

Answer 5

Evaluates if all provided statements are true

Question 6

Booleans: What does “or” do?

Answer 6

Evaluates if at least one of many statements are true

Question 7

Booleans: What does “not” do?

Answer 7

Flips the bool value

Question 8

What are lists?

Answer 8

A data structure for mutable ordered sequences of elements

Question 9

Are lists mutable or immutable?

Answer 9

Mutable

Question 10

Are lists ordered?

Answer 10

Yes

Question 11

How are lists defined? (What starts and ends the sequence?)

Answer 11

[]

Question 12

What does mutability mean?

Answer 12

Whether an object can change it’s values after it has been created

Question 13

What does order mean?

Answer 13

Whether the order of elements in a sequence matters (and whether this can be used to access elements)

Question 14

Are strings ordered?

Answer 14

Yes

Question 15

Why is ordering helpful?

Answer 15

Because indexing works well

Question 16

What does print() do?

Answer 16

Writes text

Question 17

What does len() do?

Answer 17

Returns the length of a sequence

Question 18

Does len() return the index length or intuitive numbers?

Answer 18

Intuitive

Question 19

What is this an example of? ___[1]

Answer 19

indexing

Question 20

What is this an example of? ___[1:4]

Answer 20

Slicing

Question 21

What does type() do?

Answer 21

Tells you if it’s a str, int, float

Question 22

What does \n do?

Answer 22

Starts a new line

Question 23

Dictionaries: Can they be indexed? If so, how?

Answer 23

Yes, through the use of keys

Question 24

Dictionaries: Are they mutable?

Answer 24

Yes

Question 25

T or F: The keys of a dictionary are unique

Answer 25

T

Question 26

Strings: what does find() do?

Answer 26

Finds the index at which the element occurs in the sequence

Question 27

Do spaces matter in strings? Do they count when indexing?

Answer 27

YES AND YES

Question 28

Identity operators: What does “in” do?

Answer 28

Evaluates if object/element is in a sequence or “list”

Question 29

What does replace() do?

Answer 29

Can replace a word in a string if set up like x = string.replace(y, “new word”)

Question 30

Identity operators: What does “not in” do?

Answer 30

Evaluates if object/element is not include in the sequence or “list”

Question 31

List Methods: what does len() do?

Answer 31

Returns how many elements there are in a list

Question 32

List Methods: what does max() do?

Answer 32

Returns the greatest element in a list

Question 33

List Methods: what does min() do?

Answer 33

Returns the smallest element in a list

Question 34

List Methods: what happened if you use max() or min() when the list contains words/strings?

Answer 34

Will return the last(max) element or first(min) element to occur if list was sorted alphabetically

Question 35

List Methods: When can you not use max() and min()?

Answer 35

When list contains both strings and integers

Question 36

List Methods: What does sorted() do?

Answer 36

Returns the copy of the list in order of smallest to largest

Question 37

List Methods: What does join() do?

Answer 37

Takes a list as an argument, and returns the string consisting of the list elements joined by a separator string(will combine all listed strings)

Question 38

List Methods: T or F; You can only use join for a list made entirely of strings

Answer 38

T

Question 39

List Methods: What does append() do?

Answer 39

Adds an element to the end of the list

Question 40

Attributes of a collection for which using a list would be appropriate

Answer 40

Sortable, add items with .append, items are always indexed with numbers starting at 0

Question 41

Attributes of a collection for which using a set would be appropriate

Answer 41

Order in which items seem to be inconsistent, mutable, add items with .add

Question 42

Attributes of a collection for which using a dictionary would be appropriate

Answer 42

Each item contains two parts, order in which items seem to be inconsistent, can be nested